C#打印Panel问题

small5e4444 2012-10-10 09:28:31

问题，我的panel设置和A4纸一样大小，但是显示器放不下，所以做了滚动条，但是打印时只能打出显示器显示的部分，超出显示器的部分就打不上，怎么办？？？？

private void vistaButton1_Click(object sender, EventArgs e)
{
CaptureScreen();
PrintDocument pd = new PrintDocument();
pd.PrintPage += new PrintPageEventHandler(pd_PrintPage);
PrintPreviewDialog cppd = new PrintPreviewDialog();
cppd.Document = pd;
cppd.ShowDialog();
}

void pd_PrintPage(object sender, PrintPageEventArgs e)
{
e.Graphics.DrawImage(memoryImage, 0, 0);

}

[System.Runtime.InteropServices.DllImport("gdi32.dll ")]
public static extern long BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, int dwRop);
private Bitmap memoryImage;
private void CaptureScreen()
{
Graphics mygraphics = this.panel1.CreateGraphics();//创建的是整个panel
Size s = this.panel1.Size;//取panel大小
memoryImage = new Bitmap(s.Width, s.Height, mygraphics);
Graphics memoryGraphics = Graphics.FromImage(memoryImage);
IntPtr dc1 = mygraphics.GetHdc();
IntPtr dc2 = memoryGraphics.GetHdc();
BitBlt(dc2, 0, 0, this.panel1.ClientRectangle.Width, this.panel1.ClientRectangle.Height, dc1, 0, 0, 13369376);
mygraphics.ReleaseHdc(dc1);
memoryGraphics.ReleaseHdc(dc2);

}

...全文